I bought this phone 5 months ago. Design is so good. Specifications are really awesome at this price range. Camera quality is perfectly good. After editing I can see my pics as taken from DSLR.
Sound quality is also good. Screen resolution is awesome at this range.
But a month ago I got a notification to update my MIUI and I did it. The moment I did that my phone started to hang. Facebook and Instagram when running for more than half an hour shuts down automatically.
If I am running some app for a bit longer it started to slow down and hangs up.